This page explains how Krishna Nandakumar (USATT# 229845)'s rating went from 1321 to 1231 at the ICC - Advanced League event from 16 Jul 2022. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.